GPU Passthrough crashes PVE

[grega1303]

Hello all,

I have been trying to fix this for a few hours and am out of options so here I am.
I accidentally selected GPU passthrough when setting up one of my VMs.
When I did this proxmox UI (10.0.0.201 for me) crashed with no SSH access either after the crash

When I boot the local machine, I get this error -
pve login: [
32.2187491 EXT4-fs error (device dm-1): ext4_journal_check_start:84: comm systemd-journal: Detected aborted journal
[ 32.2188151 EXT4-fs (dm-1): Remounting filesystem read-only
-

followed by a crash about 20 seconds after boot

From other support articles there is nothing at /etc/pve/qemu-server/
and commented out nvidiasomething from /etc/modprobe.d/

I don't know If it would be better to remove the passthrough or set it up, both I don't know how to do

I am running a lenovo m720q i7-7700t with 2, SSD's for reference

I am fairly handy with Linux but no wizard, I don't know what is customary to send with these issues. If any additional information is needed, I will be happy to provide it, but I may not know how to get the information, instructions would be much appreciated

also if this is a simple RTFM, I'm sorry, a little stressed because I have a project on pve that I need and can't retrieve

Greg

 

[leesteken]

Don't experiment with PCI(e) passthrough with VMs that start automatically. Check your IOMMU groups. Disable IOMMU/VT-d temporarily (via motherboard BIOS or Proxmox boot menu) to prevent VMs with PCI(e) passthrough from starting, so you can fix the problem.

 

[grega1303]

Don't experiment with PCI(e) passthrough with VMs that start automatically. Check your IOMMU groups. Disable IOMMU/VT-d temporarily (via motherboard BIOS or Proxmox boot menu) to prevent VMs with PCI(e) passthrough from starting, so you can fix the problem.

ok I want to make sure I have everything set proporly in my head. Im not too sure about step 1 but this is what I am thinking

also yea i know better then to have auto restart on, i was kind of in a rush to get this VM up and had a misclick on display settings, my template had auto restart on and i never changed it

Step 1 - Check your IOMMU groups - I am not sure what to "check" and what commands to run
Step 2 - disable virtualization in the BIOS
Step 3 - boot pve normal - should be able to hit (10.0.0.201)
Step 4 - set display on misbehaving VM to default & save
Step 5 - Reboot again, bios and turn virtualization back on
Step 6 - Nothing else i don't think just go on living my best life with a working PVE

Thanks for the quick reply!
Greg